Sound-reproducer.



No. 797516. PATENTED AUG. 15, 1905. A. L. IRISH,

SOUND REPRODUOER.

APILIGATION FILED MAYZ, 1904.

W Z "L Zijfi JA/mvrm;

Muff Ema/z UNITED STATE PATENT OFFICE.

ALBERT L. IRISH, OF TOLEDO, OHIO, ASSIGNOR TO THE TALK-O-PHONE COMPANY,OF TOLEDO, OHIO, A CORPORATION OF OHIO.

SOUND-HEPRODUCEH.

Specification of Letters Patent.

Patented Aug. 15, 1905.

Application filed May 2,1904:- Serial No. 205,881.

To all whom, it may concern:

Be it known that I, ALBERT L. IRISH, of Toledo, county of Lucas, andState of Ohio, have invented certain new and useful Improvements inSound-Reproducers; and I do hereby declare that the following is a full,clear, and exact description of the invention, which will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the figures ofreference marked thereon, which form part of this specification.

My invention has reference to a sound-reproducer for talking-machines;and it has particular reference to improvements in the details ofconstruction whereby the various parts may be assembled with increasedfacility and with a greater degree of precision than has been attainedheretofore in the art.

In carrying out my invention I provide means whereby the pivoted arm ofthe reproducer, adapted to connect with the diaphragm of the instrument,may be turned upon its pivotal connections completely out of the way ofthe operator while the diaphragm is being placed in position or is beingremoved therefrom for the purpose of effecting repairs. By means of myimproved construction the pivoted arm may be effectively adjusted uponits pivots and its proper alinement for connection with the diaphragminsured before its final connection therewith is accomplished.

In the construction of my reproducer I have entirely eliminated theemployment of springs of any character whatever, the resultingconstruction comprising a minimum number of parts and combiningsimplicity, durability, and effectiveness.

In the fulfilment of my invention I employ the novel combination,arrangement, and details of construction hereinafter shown, described,and claimed.

In the accompanying drawings, illustrative of my invention, Figure 1 isa front face view of a sound reproducer embodying my improvedconstruction. Fig. 2 is a rear view of the same. Fig. 3 is a transversesection thereof.

Referring to the details of construction, 1 indicates the shell of thereproducer, adapted to hold the mica disk or diaphragm 2 about itsmarginal edges in the usual manner, the

port the same in proper position. The diaphragm is held in contact withthe shoulder by means of a split ring 4:, adapted to be forced into theshell and by its resiliency engage the inner walls thereof.

5 is the usual hollow cylindrical extension upon the shell, adapted toconnect with the horn of the talking machine. Projecting outwardly atone side of the shell and extending beyond its periphery are twoparallel supports 6 and 7, disposed apart and adapted to pivotallysupport an arm 8 between them. The means for pivoting the arm compriseconically-pointed screws 9, extending through the supports 6 and 7 andarranged in line with each other, with the pointed ends projecting intothe space between the supports, and oppositely-disposed extensions ortrunnions 10 upon the arm 8, provided with conical recesses adapted toreceive the pointed ends of the screws 9.

11 represents lock-nuts upon the screws 9, adapted to contact with theouter faces of the supports 6 and 7 and lock the screws against rotationafter they have been properly adjusted.

12 is a rearwardly-extending socket integral with the arm 8, the samebeing provided with the usual axial perforation and set-screw to securethe usual pointed pin in position therein.

13 is an inwardly-extending recess in the shell between the arms 6 and7, adapted to permit the unobstructed turning of the arm 8 upon itspivotal connection at right angles to the plane of the diaphragm topermit the arm to assume a position perpendicular to the diaphragm.

The advantages of my improved construction will be apparent uponassembling the various parts in proper adjusted relation to each other.In performing this operation the arm 8 is mounted between the extendedsupports 6 and 7, the same being properly adjusted by manipulating thepointed screws 9, the nuts 11 being then turned to lock the screwsagainst rotation. When thus supported, the arm 8 may be readily swungabout upon its pivotal connections in a plane transverse to the plane ofthe diaphragm, taking the position in full lines, Fig. 3. The diaphragmmay now be placed in position in the initial assembling of the parts, orthe same may be conveniently removed should it become shell beingprovided with a shoulder 3 to supl necessary to replace the same. Theplacing of the diaphragm in position is accomplished Without in theleast interfering With the adjustment of the arm 8. It is to be observedthat the pivoted arm 8 may be adjusted in a transverse direction uponits pivotal connection by manipulating the screws 9 so that the properregistry of the free end of the arm with the center of the diaphragm isreadily accomplished, the connection With the diaphragm being usuallyeffected by providing a central aperture therethrough through Which ascrew 14: engages the end of the operating-arm.

It Will be seen from the foregoing description that a sound-reproducerconstructed in accordance therewith will be extremely simple, that theparts thereof may be readily adjusted with relation to each other, andthat the placing or replacing of the diaphragm is accomplished Withfacility and despatch and Without disturbing the adjustment of the otherparts of the instrument.

Having described my invention, What I claim, and desire to secure byLetters Patent of the United States, is

In a sound-reproducer, a shell provided with extended parallel supportsand inclosing a diaphragm, ad justing-screws having cone-shaped endsextending inwardly from said supports, and an arm connected at one endWith the diaphragm and provided on opposite sides With recesses adaptedto receive the cone-shaped ends of the adj Listing-screws, said shellhaving an inwardly-extending recess between the parallel supports topermit said arm to be turned to assume a position perpendicular to thediaphragm substantially as described.

In testimony that I claim the foregoing as my own I aflix my signaturein presence of two Witnesses.

ALBERT L. 'lRISH.

WVitnesses: V

D. B. Po'r'rs, CARL H. KELLER.

